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# Loop through list
for item in list:
  print(item)
  
# Loop through list with index
for index, item in enumerate(list):
  print(index, item)
  
# Loop through dictinary:
for key, value in dict.items():

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Importing Data

• Dictionary to DataFrame

df = pd.Dataframe(my_dict)

• Dictionary to DataFrame with row labels

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# Print without line break
print('*', end='')

# Print without spaces between arguments
print('a', 'b', 'c', sep='')

# Flush the output in case of buffering problems
print('*', end='', flush=True)

# String formatting: https://docs.python.org/3/library/string.html#formatstrings

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Bash Commands

• cd ..
  Change to the parent directory

• cd -
  Change to the previous directory

• open .
  Open current folder in Finder

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imputer = Imputer(missing_values='NaN', strategy='mean', axis=0)
# imputer = Imputer(missing_values='NaN', strategy='median', axis=0)
# imputer = Imputer(missing_values='NaN', strategy='most_frequent', axis=0)
# imputer = Imputer(missing_values=0, strategy='mean', axis=0)
X_train = imputer.fit_transform(X_train)
X_test = imputer.transform(X_test)

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# The following code fetches the most recent 1000 mentions of 'python'.

from tweepy import Stream
    from tweepy import OAuthHandler
    from tweepy.streaming import StreamListener
    import tweepy
    import time

    ckey ='x'
    csecret = 'x'

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Service info                       
sc queryex servicename

Kill service                               
taskkill /f /pid mypid

System file checker               
sfc /scannow

Available physical memory 

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Initialize a new git repository \
`git init` 

Stage files \
`git add .` 

Commit messages \
`git commit -m <commit message>` 

Clone remote repository \

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Computer management             
compmgmt.msc

Control panel                            
control

Device manager                 
devmgmt.msc

Disk cleanup                             

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